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#!/usr/bin/env python
# Copyright (c) 2009 Chris Moyer http://coredumped.org/
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
#
# Elastic Load Balancer Tool
#
VERSION="0.1"
usage = """%prog [options] [command]
Commands:
list|ls List all Elastic Load Balancers
delete <name> Delete ELB <name>
get <name> Get all instances associated with <name>
create <name> Create an ELB
add <name> <instance> Add <instance> in ELB <name>
remove|rm <name> <instance> Remove <instance> from ELB <name>
enable|en <name> <zone> Enable Zone <zone> for ELB <name>
disable <name> <zone> Disable Zone <zone> for ELB <name>
"""
def list(elb):
"""List all ELBs"""
print "%-20s %s" % ("Name", "DNS Name")
print "-"*80
for b in elb.get_all_load_balancers():
print "%-20s %s" % (b.name, b.dns_name)
def get(elb, name):
"""Get details about ELB <name>"""
b = elb.get_all_load_balancers(name)
if len(b) < 1:
print "No load balancer by the name of %s found" % name
return
b = b[0]
print "Name: %s" % b.name
print "DNS Name: %s" % b.dns_name
print
print "Listeners"
print "---------"
print "%-8s %-8s %s" % ("IN", "OUT", "PROTO")
for l in b.listeners:
print "%-8s %-8s %s" % (l[0], l[1], l[2])
print
print " Zones "
print "---------"
for z in b.availability_zones:
print z
print
print "Instances"
print "---------"
for i in b.instances:
print i.id
print
def create(elb, name, zones, listeners):
"""Create an ELB named <name>"""
l_list = []
for l in listeners:
l = l.split(",")
l_list.append((int(l[0]), int(l[1]), l[2]))
b = elb.create_load_balancer(name, zones, l_list)
return get(elb, name)
def delete(elb, name):
"""Delete this ELB"""
b = elb.get_all_load_balancers(name)
if len(b) < 1:
print "No load balancer by the name of %s found" % name
return
b = b[0]
b.delete()
print "Load Balancer %s deleted" % name
def add_instance(elb, name, instance):
"""Add <instance> to ELB <name>"""
b = elb.get_all_load_balancers(name)
if len(b) < 1:
print "No load balancer by the name of %s found" % name
return
b = b[0]
b.register_instances([instance])
return get(elb, name)
def remove_instance(elb, name, instance):
"""Remove instance from elb <name>"""
b = elb.get_all_load_balancers(name)
if len(b) < 1:
print "No load balancer by the name of %s found" % name
return
b = b[0]
b.deregister_instances([instance])
return get(elb, name)
def enable_zone(elb, name, zone):
"""Enable <zone> for elb"""
b = elb.get_all_load_balancers(name)
if len(b) < 1:
print "No load balancer by the name of %s found" % name
return
b = b[0]
b.enable_zones([zone])
return get(elb, name)
def disable_zone(elb, name, zone):
"""Disable <zone> for elb"""
b = elb.get_all_load_balancers(name)
if len(b) < 1:
print "No load balancer by the name of %s found" % name
return
b = b[0]
b.disable_zones([zone])
return get(elb, name)
if __name__ == "__main__":
try:
import readline
except ImportError:
pass
import boto
import sys
from optparse import OptionParser
from boto.mashups.iobject import IObject
parser = OptionParser(version=VERSION, usage=usage)
parser.add_option("-z", "--zone", help="Operate on zone", action="append", default=[], dest="zones")
parser.add_option("-l", "--listener", help="Specify Listener in,out,proto", action="append", default=[], dest="listeners")
(options, args) = parser.parse_args()
if len(args) < 1:
parser.print_help()
sys.exit(1)
elb = boto.connect_elb()
command = args[0].lower()
if command in ("ls", "list"):
list(elb)
elif command == "get":
get(elb, args[1])
elif command == "create":
create(elb, args[1], options.zones, options.listeners)
elif command == "delete":
delete(elb, args[1])
elif command in ("add", "put"):
add_instance(elb, args[1], args[2])
elif command in ("rm", "remove"):
remove_instance(elb, args[1], args[2])
elif command in ("en", "enable"):
enable_zone(elb, args[1], args[2])
elif command == "disable":
disable_zone(elb, args[1], args[2])
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